*{
    margin: 0;
    padding: 0;
}
.index{
    width:100%;
    height: 100vh;
}
.left{
    width: 18%;
     height: 100vh;
}
.right{
    width: 82%;
    height: 100%;
    margin-top: -856px;
    margin-left: 256px;
}